ODK Survey ui missing show sent and unsent forms menu item; show/hide logic needs updating

[mitchellsundt]

Originally reported on Google Code with ID 757

On the Send Finalized Form screen:

(1) the menu item for showing all sent and unsent forms is missing.
(2) the show/hide logic needs to be updated. 

When we have multiple forms working in a single row (in some sort of state machine
model of form edits), we need a way to identify the submissions that are eligible for
sending to the server.

It will be tricky to figure out the logic for edge cases, like when a submission transits
through 2 or more 'send' states -- do we want to recognize this and allow the publishing
of the record in the earlier streams, or just support publishing in the last appropriate
data stream.

Reported by mitchellsundt on 2013-01-31 18:42:58